There is a new family of radiation-hardened FPGAs from a French company, called NanoXplore. These parts are being evaluated for space applications be CERN.
Can Vivado/Vitis be installed without using the GUI installer? Fortunately, the answer is “yes”.
A long time ago, a colleague described the challenge of getting the widest data eye possible and some of the subtle things that he had to consider. He described what happens as a differential pair turned a corner; one of the two traces would always have to take a longer path.